Yesterday I asked a question on the math stackexchange forum about a sequence where the first terms are the solutions to the polynomials formed from x determinants. Here are the 250 first terms as requested in a comment:

The solutions as they come out from Mathematica are listed by magnitude so they need to be sorted according to the difference between two successive lists of solutions. This list above has been sorted in a Excel spreadsheet using the MATCH(value,range,0) function.